the man who inspired they deadly idea and why the fbi can't do a thing to stop them. you're watching "world news now." [ female announcer ] with daily moisture renewal from pantene. the pro-v system nourishes to lock in moisture erasing the damage of 100 blow drys for a silky, soft touch. think only salon brands can do that? i took the dare...will you? [ female announcer ] daily moisture renewal from pantene. hair so healthy it shines. >>> welcome back, everyone. something of a wake-up call as we enter the by >>> welcome back, everyone. something of a wake-up call as we enter the busy holiday travel season. there are still those who want to do us harm. >> the newest example announced just yesterday. four americans busted for blotting to kill other americans. their inspiration, as abc's pierre thomas reports, is long dead. >> reporter: al awlaki was the world's most wanted man, public enemy one, encouraging radicals to attack america in online preaching. america killed him in a drone strike in 2011 and we learned al-awlaki is recruiting terrorists. announcing charges a